P0455 on Toyota Tundra: Symptoms, Causes & DIY Fix
Official technical diagnostic wire for fault code P0455 (P0455: Evaporative Emission Control System Leak Detected (Gross Leak)) specifically affecting Toyota Tundra vehicles equipped with 3.4L Twin-Turbo V6 (V35A-FTS 389HP) / i-FORCE MAX Hybrid (437HP).
1. Symptoms of P0455 on Toyota Tundra
When the Engine Control Module (ECM/PCM) on your Toyota Tundra (3.4L Twin-Turbo V6 (V35A-FTS 389HP) / i-FORCE MAX Hybrid (437HP)) logs fault code P0455, drivers commonly observe:
2. Most Likely Causes on Toyota Tundra
Historical warranty claims and technical repair bulletins for Toyota Tundra point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for Toyota Tundra
Remove gas cap, inspect rubber O-ring for cracks, tighten until it clicks 3 times. on the Toyota Tundra equipped with 3.4L Twin-Turbo V6 (V35A-FTS 389HP) / i-FORCE MAX Hybrid (437HP).
If the cap rubber is dried or cracked, replace with genuine OEM cap ($15). on the Toyota Tundra equipped with 3.4L Twin-Turbo V6 (V35A-FTS 389HP) / i-FORCE MAX Hybrid (437HP).
Disconnect electrical plug and vacuum hose. Apply 12V; verify valve seals tight when unpowered. on the Toyota Tundra equipped with 3.4L Twin-Turbo V6 (V35A-FTS 389HP) / i-FORCE MAX Hybrid (437HP).
Check vent valve for road salt corrosion or spider nest clogs. on the Toyota Tundra equipped with 3.4L Twin-Turbo V6 (V35A-FTS 389HP) / i-FORCE MAX Hybrid (437HP).
Pump mineral oil smoke into EVAP port to reveal any hairline cracked lines. on the Toyota Tundra equipped with 3.4L Twin-Turbo V6 (V35A-FTS 389HP) / i-FORCE MAX Hybrid (437HP).
4. Toyota Tundra P0455 FAQs
What causes code P0455 to trigger on a Toyota Tundra?
On the Toyota Tundra (3.4L Twin-Turbo V6 (V35A-FTS 389HP) / i-FORCE MAX Hybrid (437HP)), P0455 is most frequently caused by Missing, loose, or cracked gas cap seal or Faulty EVAP purge control solenoid. Factory sensor degradation or wiring harness wear near the engine bay are common factors.
Can I safely drive my Toyota Tundra with code P0455?
Yes. Completely safe to drive, but emissions test will fail. Given that P0455 carries a Low severity rating on Toyota vehicles, we advise performing diagnostic scanning via the OBD-II port located driver side lower dash assembly near parking brake before extended highway driving.
Where is the diagnostic port located on the Toyota Tundra?
The 16-pin OBD-II DLC connector on the Toyota Tundra is situated driver side lower dash assembly near parking brake. It requires no special tools to plug in a standard scanner.
How much does it cost to fix P0455 on a Toyota Tundra?
DIY replacement parts typically range between $15 - $250 (DIY: $15 - $50). If serviced at an authorized Toyota dealership, expect an additional $120–$250 in professional labor based on their $110/hr hourly rate.